Compact MIMO/diversity slot antenna for UWB applications with band‐notched characteristic

Abstract

A novel MIMO sharp band-notched antenna with high isolation for UWB applications is presented. The antenna consists of two antenna elements with an overall area of 18 × 36 mm 2. A T-shaped stub is extruded in the ground plane to improve isolation and an L-shaped stub to introduce band-notched function C-band (3.62-4.77 GHz). The designed antenna possesses a low mutual coupling of <−20 dB over the operating band from 2.9 to 20 GHz. The performance of this antenna is studied in terms of isolation between the two ports, radiation pattern, efficiency, realised gain, and envelope correlation coefficient. Conclusion: We have proposed enhanced bandwidth, compact, MIMO antenna with band-notched characteristics for modern wireless UWB applications. The proposed MIMO antenna offers an impedance bandwidth of 17.1 GHz (from 2.9 to 20 GHz) with a good impedance matching and good isolation over the operating band with band notched at C-band.

Compact eight‐port MIMO/diversity antenna with band rejection characteristics

“…The proposed MIMO antenna has several advantages as compared with the existing antennas reported in the literature. [8][9][10][11][12][13][14][15][16][17][18][19][20][21] The proposed antenna consists of eight radiators that offer additional degrees of freedom to improve link reliability and transmission capacity. The single radiating element covers several allocated bands including the UWB, and these bands are effectively utilized by introducing diversity schemes.…”

“…A number of MIMO antenna designs with two, four, and eight radiating elements have been reported in the last few years. [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] However, there was always a trade-off of antenna dimensions, isolation, resonating range, radiation characteristics, and complexity in all of these presented designs and techniques.…”

Multiple‐input‐multiple‐output/diversity antenna with dual band‐notched characteristics for ultra‐wideband applications

“…A microstrip‐fed two‐port antenna with square radiators loaded with G‐shaped element for notching WLAN standard band was presented . A MIMO/diversity antenna with eye‐shape slotted circular radiator and T‐shaped decoupling element was reported, in which L‐shaped stubs were used to achieve notch band characteristics . A two‐element filtenna consisting of a circular radiator and an implanted rectangle‐shaped complementary split ring resonator (CSRR) structure to obtain dual‐band notches was designed .…”

Design of a compact protrudent‐shaped ultra‐wideband multiple‐input‐multiple‐output/diversity antenna with band‐rejection capability

“…The mutual coupling among the two radiators of UWB MIMO antenna design in Reference is achieved by two heptagonal monopole elements located at right angle and identically on the substrate while a frequency rejection at the WLAN band is created by a slot etched on each of the antenna elements. In Reference , low mutual coupling and band‐rejection capability at C‐band are achieved by affixing T‐ and L‐shaped stubs at the ground plane. In Reference , various phase‐ and amplitude‐control reflected metasurface antennas are presented to simultaneously manipulate the antenna's main‐ and side‐lobes and in Reference , anisotropic focusing metasurface is presented for dual‐mode and dual‐band flat high‐gain antenna applications.…”